Not sure what age these ducks are... is this size normal?

[Little Brown Coop]

So I bought these ducks July 1st they were discounted because they were 'too big'.
Purchased them from Rural King when they were smaller than my hand (girl hand btw).
I've had them 16 days and they seem really huge.
They were marked 300 layers which I found out when I got home they were not because thay are the wrong color.
I wanted them for eggs and now I'm hoping they will be white egg laying hybrids at least. They are supposed to be as productive as golden 300 in that department.
BUT I wonder if they are jumbo pekins because they seem so big!
Here are a few pics...
They can't be more than a month old probably less.
They seem to sit a lot the bigger they get.
Is this normal growth?

 

[Northwest_Wannabe]

Haven't had pekins so I can't comment on breed but I did want to chime in an say that ducks in general just grow REALLY fast! Faster than most chickens I believe

 

[Duck mommy 2019]

they look like pekins!

 

[CuddleNest]

And you're sure they are female? What are you feeding them?

I didn't know what breed I had but thought I had pekin. In fact my first post on byc was about, oh my god am I overfeeding my ducklings?? I just couldn't explain the growth. They were HUGE.

Then, various experienced duck peeps here told me that they are probably muscovy, which explained a lot. Breed, gender, and food seems to make a big difference. My neighbors have the same breed and age ducklings (we got them together at the same breeder), but their ducks are half the size, even now they are significantly smaller (9.5 weeks old). I'm feeding my ducks this 20% protein pellet mix for chicks that I add brewer's yeast to. The neighbors are feeding them oatmeal. All ducks also get grass and whatever else they find in the yard. Both methods are apparently standard. Regarding gender, I can't say for pekins, but my male is already almost twice the size of the female and even at the age of yours in the picture, the legs were rather thick like that, thicker than the female.

 

[Little Brown Coop]

And you're sure they are female? What are you feeding them?

I didn't know what breed I had but thought I had pekin. In fact my first post on byc was about, oh my god am I overfeeding my ducklings?? I just couldn't explain the growth. They were HUGE.

Then, various experienced duck peeps here told me that they are probably muscovy, which explained a lot. Breed, gender, and food seems to make a big difference. My neighbors have the same breed and age ducklings (we got them together at the same breeder), but their ducks are half the size, even now they are significantly smaller (9.5 weeks old). I'm feeding my ducks this 20% protein pellet mix for chicks that I add brewer's yeast to. The neighbors are feeding them oatmeal. All ducks also get grass and whatever else they find in the yard. Both methods are apparently standard. Regarding gender, I can't say for pekins, but my male is already almost twice the size of the female and even at the age of yours in the picture, the legs were rather thick like that, thicker than the female.

They are on chick starter 18% but started limiting availability at night and mixing a little oatmeal to reduce protein levels. I'm not in a hurry to fatten them up or grow really fast. They got nutritional yeast until I found niacin tablets now they get niacin in their water.
I don't know their gender, I hope at least one is a female. They both are about the same size. I tried to sex them when I brought them home, they might have been too big or I possibly (probably) didn't know how to do it right. I didn't find anything.

How many breeds have yellow ducklings that have orange bills and legs besides pekins? Ya I noticed how thick their legs are but I haven't had ducks before so don't know what is normal.
They are a little klutzy, one fell over and landed on its back and couldn't flip back over. lol
They recognize that I'm the bringer of food but still think I'm a scary giant and don't get close voluntarily unless I have tuna, they will eat that out of my hand.

 

[Isaac 0]

They look like Pekins to me.